{% extends 'base.html' %}
{% block title %}
    新建文章
{% endblock %}
{% block css %}
    <link rel="stylesheet" href="/static/css/cropper.min.css">
    <link rel="stylesheet" href="/static/css/ImgCropping.css">
{% endblock %}
{% block content %}
<body style="background: #eee">
<div class="content">
    <div class="content-heading">
        <div class="container">
            <h1 class="heading" align="center">用户图片上传</h1>
        </div>
    </div>
    <div align="center">
    <button id="replaceImg" class="l-btn">更换图片</button>
    <div style="width: 320px;height: 320px;border: solid 1px #555;padding: 5px;margin-top: 10px">
        <img id="finalImg" src="" width="100%">
    </div>
    <div style="display: none" class="tailoring-container">
        <div class="black-cloth" onclick="closeTailor(this)"></div>
        {% csrf_token %}
        <div class="tailoring-content">
                <div class="tailoring-content-one">
                    <label title="上传图片" for="chooseImg" class="l-btn choose-btn">
                        <input type="file" accept="image/jpg,image/jpeg,image/png" name="file" id="chooseImg" class="hidden" onchange="selectImg(this)">
                        选择图片
                    </label>
                    <div class="close-tailoring"  onclick="closeTailor(this)">×</div>
                </div>
                <div class="tailoring-content-two">
                    <div class="tailoring-box-parcel">
                        <img id="tailoringImg">
                    </div>
                    <div class="preview-box-parcel">
                        <p>图片预览：</p>
                        <div class="square previewImg"></div>
                        <div class="circular previewImg"></div>
                    </div>
                </div>
                <div class="tailoring-content-three">
                    <button class="l-btn cropper-reset-btn">复位</button>
                    <button class="l-btn cropper-rotate-btn">旋转</button>
                    <button class="l-btn cropper-scaleX-btn">换向</button>
                    <button class="l-btn sureCut" id="sureCut">确定</button>
                </div>
            </div>
    </div>
    </div>
</div>
<!--图片裁剪框 end-->
{% endblock %}
{% block js %}
<script src="/static/jquery-3.5.1.min.js"></script>
<script src="/static/js/cropper.min.js"></script>
<script>
    $("#finalImg").prop("src",'{{ request.user.avatar }}');
    //弹出框水平垂直居中
    (window.onresize = function () {
        var win_height = $(window).height();
        var win_width = $(window).width();
        if (win_width <= 768){
            $(".tailoring-content").css({
                "top": (win_height - $(".tailoring-content").outerHeight())/2,
                "left": 0
            });
        }else{
            $(".tailoring-content").css({
                "top": (win_height - $(".tailoring-content").outerHeight())/2,
                "left": (win_width - $(".tailoring-content").outerWidth())/2
            });
        }
    })();

    //弹出图片裁剪框
    $("#replaceImg").on("click",function () {
        $(".tailoring-container").toggle();
    });
    //图像上传
    function selectImg(file) {
        if (!file.files || !file.files[0]){
            return;
        }
        var reader = new FileReader();
        reader.onload = function (evt) {
            var replaceSrc = evt.target.result;
            //更换cropper的图片
            $('#tailoringImg').cropper('replace', replaceSrc,false);//默认false，适应高度，不失真
        }
        reader.readAsDataURL(file.files[0]);
    }
    //cropper图片裁剪
    $('#tailoringImg').cropper({
        aspectRatio: 1/1,//默认比例
        preview: '.previewImg',//预览视图
        guides: false,  //裁剪框的虚线(九宫格)
        autoCropArea: 0.5,  //0-1之间的数值，定义自动剪裁区域的大小，默认0.8
        movable: false, //是否允许移动图片
        dragCrop: true,  //是否允许移除当前的剪裁框，并通过拖动来新建一个剪裁框区域
        movable: true,  //是否允许移动剪裁框
        resizable: true,  //是否允许改变裁剪框的大小
        zoomable: false,  //是否允许缩放图片大小
        mouseWheelZoom: false,  //是否允许通过鼠标滚轮来缩放图片
        touchDragZoom: true,  //是否允许通过触摸移动来缩放图片
        rotatable: true,  //是否允许旋转图片
        crop: function(e) {
            // 输出结果数据裁剪图像。
        }
    });
    //旋转
    $(".cropper-rotate-btn").on("click",function () {
        $('#tailoringImg').cropper("rotate", 45);
    });
    //复位
    $(".cropper-reset-btn").on("click",function () {
        $('#tailoringImg').cropper("reset");
    });
    //换向
    var flagX = true;
    $(".cropper-scaleX-btn").on("click",function () {
        if(flagX){
            $('#tailoringImg').cropper("scaleX", -1);
            flagX = false;
        }else{
            $('#tailoringImg').cropper("scaleX", 1);
            flagX = true;
        }
        flagX != flagX;
    });

    //裁剪后的处理
    $("#sureCut").on("click",function () {
        if ($("#tailoringImg").attr("src") == null ){
            return false;
        }else{
            var cas = $('#tailoringImg').cropper('getCroppedCanvas');//获取被裁剪后的canvas
            var base64url = cas.toDataURL('image/png'); //转换为base64地址形式
            $.ajax({
                url:'{% url 'accounts:save_upload_photo' %}',
                type:'POST',
                data:{'avatar': base64url,
                      'csrfmiddlewaretoken': $('[name="csrfmiddlewaretoken"]').val()},
                success:function(data){
                    var dataObj=JSON.parse(data);
                    if(dataObj['status']){
                        $("#finalImg").prop("src", base64url);
                    }
                    else{
                        $('button').removeAttr('disabled').text('保存');
                        $('p1').text(dataObj.message)
                    }
                }
            })
            $("#finalImg").prop("src",base64url);//显示为图片的形式

            //关闭裁剪框
            closeTailor();
        }
    });
    //关闭裁剪框
    function closeTailor() {
        $(".tailoring-container").toggle();
    }



</script>
{% endblock %}